java.lang.NullPointerException
        at org.netbeans.modules.masterfs.GlobalVisibilityQueryImpl.isVisible(GlobalVisibilityQueryImpl.java:90)
        at org.netbeans.api.queries.VisibilityQuery.isVisible(VisibilityQuery.java:117)
        at org.netbeans.modules.php.project.PhpProject.isVisible(PhpProject.java:388)
        at org.netbeans.modules.php.project.PhpProject.isVisible(PhpProject.java:392)
        at org.netbeans.modules.php.project.PhpVisibilityQuery$2.isVisible(PhpVisibilityQuery.java:72)
        at org.netbeans.modules.php.project.util.PhpProjectUtils.isVisible(PhpProjectUtils.java:229)
        at org.netbeans.modules.php.project.util.CopySupport.getValidProjectSource(CopySupport.java:285)
        at org.netbeans.modules.php.project.util.CopySupport.fileChanged(CopySupport.java:242)
        at org.openide.filesystems.DeepListener.fileChanged(DeepListener.java:149)
        at org.openide.filesystems.DeepListener.fileChanged(DeepListener.java:142)
        at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectKeeper.fileChanged(FileObjectKeeper.java:192)
        at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEventImpl(FCLSupport.java:142)
        at org.openide.filesystems.FCLSupport$DispatchEventWrapper.dispatchEvent(FCLSupport.java:125)
        at org.openide.filesystems.FCLSupport.dispatchEvent(FCLSupport.java:102)
        at org.openide.filesystems.FileObject$ED.dispatch(FileObject.java:1071)
        at org.openide.filesystems.EventControl.invokeDispatchers(EventControl.java:205)
        at org.openide.filesystems.EventControl.exitAtomicAction(EventControl.java:179)
        at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:124)
        at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:539)
        at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:503)
        at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:503)
        at org.netbeans.modules.csl.core.GsfDataObject$GenericEditorSupport$Environment$SaveSupport.save(GsfDataObject.java:171)
        at org.openide.actions.SaveAction.performAction(SaveAction.java:112)
        at org.openide.actions.SaveAction.performAction(SaveAction.java:92)
        at org.openide.actions.SaveAction$Delegate.actionPerformed(SaveAction.java:229)
        at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:226)
        at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:241)
        at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:106)
        at org.netbeans.modules.openide.util.ActionsBridge$ActionRunnable$1.run(ActionsBridge.java:108)
        at org.netbeans.modules.openide.util.ActionsBridge.implPerformAction(ActionsBridge.java:83)
        at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction(ActionsBridge.java:67)
        at org.openide.awt.GeneralAction$DelegateAction.actionPerformed(GeneralAction.java:218)
        at org.openide.windows.TopComponent.processKeyBinding(TopComponent.java:1052)
        at javax.swing.JComponent.processKeyBindings(JComponent.java:2895)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2812)
        at java.awt.Component.processEvent(Component.java:5818)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4413)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:697)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:962)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:834)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:661)
        at java.awt.Component.dispatchEventImpl(Component.java:4285)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Window.dispatchEventImpl(Window.java:2440)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:117)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)